My paint on the rear passenger side rockerpanel is flaking off and I want to primer so I can run around for the next month or two without the unsightly flaking so I can save up some money to paint the whole rockerpanel

Not a picture of the flaking obviously but the grey coloring
http://memimage.cardomain.net/member_images/10/web/574000-574999/574066_19_full.jpg

-Jp